Why are the thicknesses of the lenses different?
Before that, we have talked about the acetate eyewear, metal eyewear, titanium eyewear in detail, including the related knowledge of wood eyewear and buffalo horn eyewear later. Now more and more people with myopia, when conditions permit, myopia patients want to wear a pair of light and thin glasses. Wearing thin and light glasses for a long time will not press the nose and tire the ears. So why is the thickness of the lens different? Below I have roughly summarized several aspects that affect the thickness of the lens, please watch. 1: The size of the glasses frame. Assuming your interpupillary distance is 60, and the frame's interpupillary distance is 70, divide by 2 and you should move the center point by 5mm. The amount of heart shift is what really determines the thickness in essence. Myopic lenses are thin at the center and thick at the edges. So the more you get to the edge, the thicker you get. In theory, the closer your interpupillary distance is to the frame's inte
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